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4-Chloro-alpha-methylstyrene

Also known as: 1-Chloro-4-(prop-1-en-2-yl)benzene, 1-Chloro-4-isopropenylbenzene, 4-Chloroisopropenylbenzene, 4-Isopropenylchlorobenzene, 4-isopropenyl-chlorobenzene, Benzene, 1-chloro-4-(1-methylethenyl)-, p-Chloro-alpha-methylstyrene, p-Chloroisopropenylbenzene

4-Chloro-alpha-methylstyrene (CAS 1712-70-5) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C9H9Cl and a molecular weight of 152.621 g/mol. Key properties include a melting point of 3.5ºC, a boiling point of 206.9±9.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 73.9±0.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1712-70-5
Jingsj CID
J-44405-3
Molecular Formula
C9H9Cl
Molecular Weight
152.621 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Melting Point3.5ºC
Boiling Point206.9±9.0 °C at 760 mmHg
Density1.0±0.1 g/cm3
Flash Point73.9±0.0 °C
Exact Mass152.039276
LogP3.78
Vapor Pressure0.3±0.4 mmHg at 25°C
Refractive Index1.528

Customs & Trade Information

HS Code2903999090
Summary2903999090 halogenated derivatives of aromatic hydrocarbons VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 4-Chloro-alpha-methylstyrene?

The CAS number of 4-Chloro-alpha-methylstyrene is 1712-70-5.

What are the molecular formula and molecular weight of 4-Chloro-alpha-methylstyrene?

4-Chloro-alpha-methylstyrene has molecular formula C9H9Cl and molecular weight 152.621 g/mol.

What are the upstream and downstream products of 4-Chloro-alpha-methylstyrene?

For 4-Chloro-alpha-methylstyrene, Upstream Products: 1-(4-Chlorophenyl)ethanone, Methyltriphenylphosphonium bromide, Methyltriphenylphosphonium iodide; Downstream Products: 1-(4-Chlorophenyl)propan-2-one, 9,9'-Dixanthylidene, 1-(4-Chlorophenyl)ethanone.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "4-Chloro-alpha-methylstyrene (CAS 1712-70-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-44405-3 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.